arg.h - sbase - suckless unix tools | |
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arg.h (1310B) | |
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1 /* | |
2 * Copy me if you can. | |
3 * by 20h | |
4 */ | |
5 | |
6 #ifndef ARG_H__ | |
7 #define ARG_H__ | |
8 | |
9 extern char *argv0; | |
10 | |
11 /* use main(int argc, char *argv[]) */ | |
12 #define ARGBEGIN for (argv0 = *argv, argv++, argc--;\ | |
13 argv[0] && argv[0][0] == '-'\ | |
14 && argv[0][1];\ | |
15 argc--, argv++) {\ | |
16 char argc_;\ | |
17 char **argv_;\ | |
18 int brk_;\ | |
19 if (argv[0][1] == '-' && argv[0][2] == '… | |
20 argv++;\ | |
21 argc--;\ | |
22 break;\ | |
23 }\ | |
24 for (brk_ = 0, argv[0]++, argv_ = argv;\ | |
25 argv[0][0] && !brk_;\ | |
26 argv[0]++) {\ | |
27 if (argv_ != argv)\ | |
28 break;\ | |
29 argc_ = argv[0][0];\ | |
30 switch (argc_) | |
31 | |
32 /* Handles obsolete -NUM syntax */ | |
33 #define ARGNUM case '0':\ | |
34 case '1':\ | |
35 case '2':\ | |
36 case '3':\ | |
37 case '4':\ | |
38 case '5':\ | |
39 case '6':\ | |
40 case '7':\ | |
41 case '8':\ | |
42 case '9' | |
43 | |
44 #define ARGEND }\ | |
45 } | |
46 | |
47 #define ARGC() argc_ | |
48 | |
49 #define ARGNUMF() (brk_ = 1, estrtonum(argv[0], 0, INT_MAX)) | |
50 | |
51 #define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\ | |
52 ((x), abort(), (char *)0) :\ | |
53 (brk_ = 1, (argv[0][1] != '\0')?\ | |
54 (&argv[0][1]) :\ | |
55 (argc--, argv++, argv[0]))) | |
56 | |
57 #define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\ | |
58 (char *)0 :\ | |
59 (brk_ = 1, (argv[0][1] != '\0')?\ | |
60 (&argv[0][1]) :\ | |
61 (argc--, argv++, argv[0]))) | |
62 | |
63 #define LNGARG() &argv[0][0] | |
64 | |
65 #endif |